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Security Optical Memory Using Multi-Stimuli-Responsive UV Phosphors
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DOI：10.1002/adom.202502267.png)
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In the quest for advanced memory systems that integrate high storage capacity with robust security, optical memory based on storage phosphors has emerged as a compelling solution. Here, a co-doped UV phosphor, LuAl3B4O12:Bi3+,Gd3+, is presented for security optical memory applications. The phosphor can be effectively charged using UV mercury lamps, storing excitation energy in the form of trapped charges. Selective release of this energy as 312 nm UV emission is achievable through various stimuli, including heat, monochromatic light, and ambient lighting, enabling controllable data retrieval. The phosphor's broad energy distribution of multi-structure traps allows for multilevel readouts, facilitating high-density data storage. Additionally, it exhibits a daylight-stimulated UV readout and exceptional cyclability (>1000 cycles), ensuring reliable performance across various environments. These attributes position the phosphor as an excellent candidate for secure optical memory devices, where sensitive data can be securely stored and accessed only through specific stimuli, thereby enhancing protection against unauthorized access.
Keyword:
Gd3+emission
multi-trap structure
optical information storage
persistent energy transfer
UV phosphors
期刊
IF:
7.2
论文数:
8.9K
被引数:
4.6W
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Photochromism and Long Persistent Luminescence in Pr3+-Doped Garnet Transparent Ceramic via UV or Blue Light Up-Conversion Charging通过UV或蓝光上转换充电在Pr3掺杂的石榴石透明陶瓷中的光致变色和长持续发光
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分享收藏分享收藏Unlocking the potential of up-conversion charging for rapid and high-resolution optical storage with phosphors通过荧光粉解锁上转换充电的潜力，以实现快速和高分辨率的的光学存储。
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